'Resentful' definitions:

Definition of 'resentful'

From: WordNet
adjective
Full of or marked by resentment or indignant ill will; "resentful at the way he was treated"; "a sullen resentful attitude" [ant: unresentful]

Definition of 'Resentful'

From: GCIDE
  • Resentful \Re*sent"ful\ (-f?l), a. Inclined to resent; easily provoked to anger; irritable. -- {Re*sent"ful*ly}, adv. [1913 Webster]